When it was built, Tower Bridge was the largest and most sophisticated bascule bridge ever built （"bascule" comes from the French for "see-saw"）. 塔桥竣工时，是当时最大最精密的平衡活动结构（“平衡活动结构”一词源自法语中的“秋千”，以下简称吊桥）。
Besides,the simulation model of steel deck pavement of the Tianjin Xiangluo Bay Bascule Bridge under vehicle load is established. 分析结果表明,以不同力学响应为铺装层力学控制指标时,采用的仿真模型也不同;
The pumping unit adopts tower structure with great stability and easy to field installation. The pumping unit also adopts chorate bascule and easy to transport. 机架采用塔式结构，稳定性好，便于现场安装；大型机机架则采用活动收缩式结构，便于包装运输。